1 |
dl |
1.1 |
/* |
2 |
dl |
1.7 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
|
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* Expert Group and released to the public domain, as explained at |
4 |
jsr166 |
1.43 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.12 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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|
9 |
jsr166 |
1.58 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
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11 |
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import java.util.ArrayList; |
12 |
jsr166 |
1.48 |
import java.util.Arrays; |
13 |
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import java.util.Collection; |
14 |
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import java.util.Iterator; |
15 |
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import java.util.NoSuchElementException; |
16 |
jsr166 |
1.49 |
import java.util.Queue; |
17 |
jsr166 |
1.48 |
import java.util.concurrent.ArrayBlockingQueue; |
18 |
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import java.util.concurrent.BlockingQueue; |
19 |
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import java.util.concurrent.CountDownLatch; |
20 |
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import java.util.concurrent.Executors; |
21 |
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import java.util.concurrent.ExecutorService; |
22 |
jsr166 |
1.74 |
import java.util.concurrent.ThreadLocalRandom; |
23 |
jsr166 |
1.58 |
|
24 |
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import junit.framework.Test; |
25 |
dl |
1.1 |
|
26 |
dl |
1.3 |
public class ArrayBlockingQueueTest extends JSR166TestCase { |
27 |
jsr166 |
1.32 |
|
28 |
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public static class Fair extends BlockingQueueTest { |
29 |
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protected BlockingQueue emptyCollection() { |
30 |
jsr166 |
1.50 |
return new ArrayBlockingQueue(SIZE, true); |
31 |
jsr166 |
1.32 |
} |
32 |
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} |
33 |
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34 |
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public static class NonFair extends BlockingQueueTest { |
35 |
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protected BlockingQueue emptyCollection() { |
36 |
jsr166 |
1.50 |
return new ArrayBlockingQueue(SIZE, false); |
37 |
jsr166 |
1.32 |
} |
38 |
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} |
39 |
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|
40 |
dl |
1.1 |
public static void main(String[] args) { |
41 |
jsr166 |
1.65 |
main(suite(), args); |
42 |
dl |
1.1 |
} |
43 |
jsr166 |
1.32 |
|
44 |
dl |
1.1 |
public static Test suite() { |
45 |
jsr166 |
1.73 |
class Implementation implements CollectionImplementation { |
46 |
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public Class<?> klazz() { return ArrayBlockingQueue.class; } |
47 |
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public Collection emptyCollection() { return new ArrayBlockingQueue(SIZE, false); } |
48 |
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public Object makeElement(int i) { return i; } |
49 |
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public boolean isConcurrent() { return true; } |
50 |
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public boolean permitsNulls() { return false; } |
51 |
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} |
52 |
jsr166 |
1.32 |
return newTestSuite(ArrayBlockingQueueTest.class, |
53 |
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new Fair().testSuite(), |
54 |
jsr166 |
1.73 |
new NonFair().testSuite(), |
55 |
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CollectionTest.testSuite(new Implementation())); |
56 |
dl |
1.1 |
} |
57 |
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58 |
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/** |
59 |
jsr166 |
1.54 |
* Returns a new queue of given size containing consecutive |
60 |
jsr166 |
1.72 |
* Integers 0 ... n - 1. |
61 |
dl |
1.1 |
*/ |
62 |
jsr166 |
1.41 |
private ArrayBlockingQueue<Integer> populatedQueue(int n) { |
63 |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n); |
64 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
65 |
jsr166 |
1.15 |
for (int i = 0; i < n; i++) |
66 |
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assertTrue(q.offer(new Integer(i))); |
67 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
68 |
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assertEquals(0, q.remainingCapacity()); |
69 |
jsr166 |
1.15 |
assertEquals(n, q.size()); |
70 |
jsr166 |
1.72 |
assertEquals((Integer) 0, q.peek()); |
71 |
dl |
1.1 |
return q; |
72 |
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} |
73 |
jsr166 |
1.12 |
|
74 |
dl |
1.4 |
/** |
75 |
dl |
1.5 |
* A new queue has the indicated capacity |
76 |
dl |
1.4 |
*/ |
77 |
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public void testConstructor1() { |
78 |
dl |
1.3 |
assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity()); |
79 |
dl |
1.1 |
} |
80 |
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|
81 |
dl |
1.4 |
/** |
82 |
jsr166 |
1.18 |
* Constructor throws IAE if capacity argument nonpositive |
83 |
dl |
1.4 |
*/ |
84 |
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public void testConstructor2() { |
85 |
dl |
1.1 |
try { |
86 |
jsr166 |
1.48 |
new ArrayBlockingQueue(0); |
87 |
dl |
1.4 |
shouldThrow(); |
88 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
89 |
dl |
1.1 |
} |
90 |
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|
91 |
dl |
1.4 |
/** |
92 |
dl |
1.5 |
* Initializing from null Collection throws NPE |
93 |
dl |
1.4 |
*/ |
94 |
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public void testConstructor3() { |
95 |
dl |
1.1 |
try { |
96 |
jsr166 |
1.48 |
new ArrayBlockingQueue(1, true, null); |
97 |
dl |
1.4 |
shouldThrow(); |
98 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
99 |
dl |
1.1 |
} |
100 |
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|
101 |
dl |
1.4 |
/** |
102 |
dl |
1.5 |
* Initializing from Collection of null elements throws NPE |
103 |
dl |
1.4 |
*/ |
104 |
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public void testConstructor4() { |
105 |
jsr166 |
1.48 |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
106 |
dl |
1.1 |
try { |
107 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE, false, elements); |
108 |
dl |
1.4 |
shouldThrow(); |
109 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
110 |
dl |
1.1 |
} |
111 |
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|
112 |
dl |
1.4 |
/** |
113 |
dl |
1.5 |
* Initializing from Collection with some null elements throws NPE |
114 |
dl |
1.4 |
*/ |
115 |
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public void testConstructor5() { |
116 |
jsr166 |
1.48 |
Integer[] ints = new Integer[SIZE]; |
117 |
jsr166 |
1.66 |
for (int i = 0; i < SIZE - 1; ++i) |
118 |
jsr166 |
1.48 |
ints[i] = i; |
119 |
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Collection<Integer> elements = Arrays.asList(ints); |
120 |
dl |
1.1 |
try { |
121 |
jsr166 |
1.62 |
new ArrayBlockingQueue(SIZE, false, elements); |
122 |
dl |
1.4 |
shouldThrow(); |
123 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
124 |
dl |
1.1 |
} |
125 |
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|
126 |
dl |
1.4 |
/** |
127 |
dl |
1.5 |
* Initializing from too large collection throws IAE |
128 |
dl |
1.4 |
*/ |
129 |
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public void testConstructor6() { |
130 |
jsr166 |
1.48 |
Integer[] ints = new Integer[SIZE]; |
131 |
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for (int i = 0; i < SIZE; ++i) |
132 |
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ints[i] = i; |
133 |
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Collection<Integer> elements = Arrays.asList(ints); |
134 |
dl |
1.1 |
try { |
135 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE - 1, false, elements); |
136 |
dl |
1.4 |
shouldThrow(); |
137 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
138 |
dl |
1.1 |
} |
139 |
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|
140 |
dl |
1.4 |
/** |
141 |
dl |
1.5 |
* Queue contains all elements of collection used to initialize |
142 |
dl |
1.4 |
*/ |
143 |
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public void testConstructor7() { |
144 |
jsr166 |
1.19 |
Integer[] ints = new Integer[SIZE]; |
145 |
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for (int i = 0; i < SIZE; ++i) |
146 |
jsr166 |
1.48 |
ints[i] = i; |
147 |
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Collection<Integer> elements = Arrays.asList(ints); |
148 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements); |
149 |
jsr166 |
1.19 |
for (int i = 0; i < SIZE; ++i) |
150 |
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assertEquals(ints[i], q.poll()); |
151 |
dl |
1.1 |
} |
152 |
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|
153 |
dl |
1.4 |
/** |
154 |
dl |
1.5 |
* Queue transitions from empty to full when elements added |
155 |
dl |
1.4 |
*/ |
156 |
dl |
1.1 |
public void testEmptyFull() { |
157 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
158 |
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assertTrue(q.isEmpty()); |
159 |
dl |
1.4 |
assertEquals(2, q.remainingCapacity()); |
160 |
dl |
1.3 |
q.add(one); |
161 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
162 |
dl |
1.3 |
q.add(two); |
163 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
164 |
dl |
1.4 |
assertEquals(0, q.remainingCapacity()); |
165 |
|
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assertFalse(q.offer(three)); |
166 |
dl |
1.1 |
} |
167 |
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|
168 |
dl |
1.4 |
/** |
169 |
dl |
1.5 |
* remainingCapacity decreases on add, increases on remove |
170 |
dl |
1.4 |
*/ |
171 |
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public void testRemainingCapacity() { |
172 |
jsr166 |
1.64 |
BlockingQueue q = populatedQueue(SIZE); |
173 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
174 |
dl |
1.1 |
assertEquals(i, q.remainingCapacity()); |
175 |
jsr166 |
1.64 |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
176 |
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assertEquals(i, q.remove()); |
177 |
dl |
1.1 |
} |
178 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
179 |
jsr166 |
1.66 |
assertEquals(SIZE - i, q.remainingCapacity()); |
180 |
jsr166 |
1.64 |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
181 |
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assertTrue(q.add(i)); |
182 |
dl |
1.1 |
} |
183 |
|
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} |
184 |
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|
185 |
dl |
1.4 |
/** |
186 |
dl |
1.5 |
* Offer succeeds if not full; fails if full |
187 |
dl |
1.4 |
*/ |
188 |
|
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public void testOffer() { |
189 |
dl |
1.1 |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
190 |
dl |
1.3 |
assertTrue(q.offer(zero)); |
191 |
|
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assertFalse(q.offer(one)); |
192 |
dl |
1.1 |
} |
193 |
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|
194 |
dl |
1.4 |
/** |
195 |
dl |
1.5 |
* add succeeds if not full; throws ISE if full |
196 |
dl |
1.4 |
*/ |
197 |
|
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public void testAdd() { |
198 |
jsr166 |
1.63 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
199 |
|
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for (int i = 0; i < SIZE; ++i) { |
200 |
|
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assertTrue(q.add(new Integer(i))); |
201 |
|
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} |
202 |
|
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assertEquals(0, q.remainingCapacity()); |
203 |
jsr166 |
1.15 |
try { |
204 |
dl |
1.3 |
q.add(new Integer(SIZE)); |
205 |
jsr166 |
1.17 |
shouldThrow(); |
206 |
|
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} catch (IllegalStateException success) {} |
207 |
dl |
1.1 |
} |
208 |
|
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|
209 |
dl |
1.4 |
/** |
210 |
dl |
1.6 |
* addAll(this) throws IAE |
211 |
|
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*/ |
212 |
|
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public void testAddAllSelf() { |
213 |
jsr166 |
1.63 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
214 |
dl |
1.6 |
try { |
215 |
|
|
q.addAll(q); |
216 |
|
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shouldThrow(); |
217 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
218 |
dl |
1.6 |
} |
219 |
|
|
|
220 |
dl |
1.4 |
/** |
221 |
dl |
1.5 |
* addAll of a collection with any null elements throws NPE after |
222 |
|
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* possibly adding some elements |
223 |
dl |
1.4 |
*/ |
224 |
|
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public void testAddAll3() { |
225 |
jsr166 |
1.63 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
226 |
|
|
Integer[] ints = new Integer[SIZE]; |
227 |
jsr166 |
1.66 |
for (int i = 0; i < SIZE - 1; ++i) |
228 |
jsr166 |
1.63 |
ints[i] = new Integer(i); |
229 |
dl |
1.1 |
try { |
230 |
|
|
q.addAll(Arrays.asList(ints)); |
231 |
dl |
1.4 |
shouldThrow(); |
232 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
233 |
dl |
1.1 |
} |
234 |
jsr166 |
1.30 |
|
235 |
dl |
1.4 |
/** |
236 |
dl |
1.5 |
* addAll throws ISE if not enough room |
237 |
dl |
1.4 |
*/ |
238 |
|
|
public void testAddAll4() { |
239 |
jsr166 |
1.63 |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
240 |
|
|
Integer[] ints = new Integer[SIZE]; |
241 |
|
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for (int i = 0; i < SIZE; ++i) |
242 |
|
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ints[i] = new Integer(i); |
243 |
dl |
1.1 |
try { |
244 |
|
|
q.addAll(Arrays.asList(ints)); |
245 |
dl |
1.4 |
shouldThrow(); |
246 |
jsr166 |
1.17 |
} catch (IllegalStateException success) {} |
247 |
dl |
1.1 |
} |
248 |
jsr166 |
1.30 |
|
249 |
dl |
1.4 |
/** |
250 |
dl |
1.5 |
* Queue contains all elements, in traversal order, of successful addAll |
251 |
dl |
1.4 |
*/ |
252 |
|
|
public void testAddAll5() { |
253 |
jsr166 |
1.17 |
Integer[] empty = new Integer[0]; |
254 |
|
|
Integer[] ints = new Integer[SIZE]; |
255 |
|
|
for (int i = 0; i < SIZE; ++i) |
256 |
|
|
ints[i] = new Integer(i); |
257 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
258 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
259 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
260 |
|
|
for (int i = 0; i < SIZE; ++i) |
261 |
|
|
assertEquals(ints[i], q.poll()); |
262 |
dl |
1.1 |
} |
263 |
|
|
|
264 |
dl |
1.4 |
/** |
265 |
dl |
1.5 |
* all elements successfully put are contained |
266 |
dl |
1.4 |
*/ |
267 |
jsr166 |
1.17 |
public void testPut() throws InterruptedException { |
268 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
269 |
|
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for (int i = 0; i < SIZE; ++i) { |
270 |
jsr166 |
1.60 |
Integer x = new Integer(i); |
271 |
|
|
q.put(x); |
272 |
|
|
assertTrue(q.contains(x)); |
273 |
dl |
1.1 |
} |
274 |
jsr166 |
1.17 |
assertEquals(0, q.remainingCapacity()); |
275 |
dl |
1.1 |
} |
276 |
|
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|
277 |
dl |
1.4 |
/** |
278 |
dl |
1.5 |
* put blocks interruptibly if full |
279 |
dl |
1.4 |
*/ |
280 |
jsr166 |
1.17 |
public void testBlockingPut() throws InterruptedException { |
281 |
dl |
1.10 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
282 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
283 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
284 |
jsr166 |
1.25 |
public void realRun() throws InterruptedException { |
285 |
|
|
for (int i = 0; i < SIZE; ++i) |
286 |
|
|
q.put(i); |
287 |
|
|
assertEquals(SIZE, q.size()); |
288 |
|
|
assertEquals(0, q.remainingCapacity()); |
289 |
jsr166 |
1.47 |
|
290 |
|
|
Thread.currentThread().interrupt(); |
291 |
|
|
try { |
292 |
|
|
q.put(99); |
293 |
|
|
shouldThrow(); |
294 |
|
|
} catch (InterruptedException success) {} |
295 |
|
|
assertFalse(Thread.interrupted()); |
296 |
|
|
|
297 |
|
|
pleaseInterrupt.countDown(); |
298 |
jsr166 |
1.17 |
try { |
299 |
jsr166 |
1.25 |
q.put(99); |
300 |
|
|
shouldThrow(); |
301 |
|
|
} catch (InterruptedException success) {} |
302 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
303 |
jsr166 |
1.25 |
}}); |
304 |
jsr166 |
1.17 |
|
305 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
306 |
|
|
assertThreadStaysAlive(t); |
307 |
jsr166 |
1.17 |
t.interrupt(); |
308 |
jsr166 |
1.47 |
awaitTermination(t); |
309 |
jsr166 |
1.25 |
assertEquals(SIZE, q.size()); |
310 |
|
|
assertEquals(0, q.remainingCapacity()); |
311 |
dl |
1.1 |
} |
312 |
|
|
|
313 |
dl |
1.4 |
/** |
314 |
jsr166 |
1.47 |
* put blocks interruptibly waiting for take when full |
315 |
dl |
1.4 |
*/ |
316 |
jsr166 |
1.17 |
public void testPutWithTake() throws InterruptedException { |
317 |
jsr166 |
1.27 |
final int capacity = 2; |
318 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity); |
319 |
jsr166 |
1.47 |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
320 |
|
|
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
321 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
322 |
jsr166 |
1.27 |
public void realRun() throws InterruptedException { |
323 |
jsr166 |
1.47 |
for (int i = 0; i < capacity; i++) |
324 |
jsr166 |
1.27 |
q.put(i); |
325 |
jsr166 |
1.47 |
pleaseTake.countDown(); |
326 |
|
|
q.put(86); |
327 |
|
|
|
328 |
|
|
pleaseInterrupt.countDown(); |
329 |
jsr166 |
1.17 |
try { |
330 |
jsr166 |
1.27 |
q.put(99); |
331 |
|
|
shouldThrow(); |
332 |
|
|
} catch (InterruptedException success) {} |
333 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
334 |
jsr166 |
1.17 |
}}); |
335 |
|
|
|
336 |
jsr166 |
1.47 |
await(pleaseTake); |
337 |
jsr166 |
1.51 |
assertEquals(0, q.remainingCapacity()); |
338 |
jsr166 |
1.27 |
assertEquals(0, q.take()); |
339 |
jsr166 |
1.47 |
|
340 |
|
|
await(pleaseInterrupt); |
341 |
|
|
assertThreadStaysAlive(t); |
342 |
jsr166 |
1.17 |
t.interrupt(); |
343 |
jsr166 |
1.47 |
awaitTermination(t); |
344 |
jsr166 |
1.51 |
assertEquals(0, q.remainingCapacity()); |
345 |
dl |
1.1 |
} |
346 |
|
|
|
347 |
dl |
1.4 |
/** |
348 |
dl |
1.5 |
* timed offer times out if full and elements not taken |
349 |
dl |
1.4 |
*/ |
350 |
jsr166 |
1.17 |
public void testTimedOffer() throws InterruptedException { |
351 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
352 |
jsr166 |
1.46 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
353 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
354 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
355 |
|
|
q.put(new Object()); |
356 |
|
|
q.put(new Object()); |
357 |
jsr166 |
1.46 |
long startTime = System.nanoTime(); |
358 |
|
|
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
359 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
360 |
|
|
pleaseInterrupt.countDown(); |
361 |
jsr166 |
1.24 |
try { |
362 |
jsr166 |
1.46 |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
363 |
jsr166 |
1.24 |
shouldThrow(); |
364 |
|
|
} catch (InterruptedException success) {} |
365 |
|
|
}}); |
366 |
jsr166 |
1.17 |
|
367 |
jsr166 |
1.46 |
await(pleaseInterrupt); |
368 |
jsr166 |
1.47 |
assertThreadStaysAlive(t); |
369 |
jsr166 |
1.17 |
t.interrupt(); |
370 |
jsr166 |
1.46 |
awaitTermination(t); |
371 |
dl |
1.1 |
} |
372 |
|
|
|
373 |
dl |
1.4 |
/** |
374 |
dl |
1.5 |
* take retrieves elements in FIFO order |
375 |
dl |
1.4 |
*/ |
376 |
jsr166 |
1.17 |
public void testTake() throws InterruptedException { |
377 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
378 |
|
|
for (int i = 0; i < SIZE; ++i) { |
379 |
jsr166 |
1.25 |
assertEquals(i, q.take()); |
380 |
jsr166 |
1.15 |
} |
381 |
dl |
1.1 |
} |
382 |
|
|
|
383 |
dl |
1.4 |
/** |
384 |
dl |
1.5 |
* Take removes existing elements until empty, then blocks interruptibly |
385 |
dl |
1.4 |
*/ |
386 |
jsr166 |
1.17 |
public void testBlockingTake() throws InterruptedException { |
387 |
jsr166 |
1.25 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
388 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
389 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
390 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
391 |
|
|
for (int i = 0; i < SIZE; ++i) { |
392 |
jsr166 |
1.25 |
assertEquals(i, q.take()); |
393 |
jsr166 |
1.17 |
} |
394 |
jsr166 |
1.47 |
|
395 |
|
|
Thread.currentThread().interrupt(); |
396 |
|
|
try { |
397 |
|
|
q.take(); |
398 |
|
|
shouldThrow(); |
399 |
|
|
} catch (InterruptedException success) {} |
400 |
|
|
assertFalse(Thread.interrupted()); |
401 |
|
|
|
402 |
|
|
pleaseInterrupt.countDown(); |
403 |
jsr166 |
1.25 |
try { |
404 |
|
|
q.take(); |
405 |
|
|
shouldThrow(); |
406 |
|
|
} catch (InterruptedException success) {} |
407 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
408 |
jsr166 |
1.25 |
}}); |
409 |
jsr166 |
1.17 |
|
410 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
411 |
|
|
assertThreadStaysAlive(t); |
412 |
jsr166 |
1.25 |
t.interrupt(); |
413 |
jsr166 |
1.47 |
awaitTermination(t); |
414 |
dl |
1.1 |
} |
415 |
|
|
|
416 |
dl |
1.4 |
/** |
417 |
dl |
1.5 |
* poll succeeds unless empty |
418 |
dl |
1.4 |
*/ |
419 |
|
|
public void testPoll() { |
420 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
421 |
|
|
for (int i = 0; i < SIZE; ++i) { |
422 |
jsr166 |
1.25 |
assertEquals(i, q.poll()); |
423 |
dl |
1.1 |
} |
424 |
jsr166 |
1.15 |
assertNull(q.poll()); |
425 |
dl |
1.1 |
} |
426 |
|
|
|
427 |
dl |
1.4 |
/** |
428 |
jsr166 |
1.37 |
* timed poll with zero timeout succeeds when non-empty, else times out |
429 |
dl |
1.4 |
*/ |
430 |
jsr166 |
1.17 |
public void testTimedPoll0() throws InterruptedException { |
431 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
432 |
|
|
for (int i = 0; i < SIZE; ++i) { |
433 |
jsr166 |
1.25 |
assertEquals(i, q.poll(0, MILLISECONDS)); |
434 |
jsr166 |
1.15 |
} |
435 |
jsr166 |
1.17 |
assertNull(q.poll(0, MILLISECONDS)); |
436 |
jsr166 |
1.47 |
checkEmpty(q); |
437 |
dl |
1.1 |
} |
438 |
|
|
|
439 |
dl |
1.4 |
/** |
440 |
jsr166 |
1.37 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
441 |
dl |
1.4 |
*/ |
442 |
jsr166 |
1.17 |
public void testTimedPoll() throws InterruptedException { |
443 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
444 |
|
|
for (int i = 0; i < SIZE; ++i) { |
445 |
jsr166 |
1.47 |
long startTime = System.nanoTime(); |
446 |
|
|
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
447 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
448 |
|
|
} |
449 |
|
|
long startTime = System.nanoTime(); |
450 |
|
|
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
451 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
452 |
|
|
checkEmpty(q); |
453 |
dl |
1.1 |
} |
454 |
|
|
|
455 |
dl |
1.4 |
/** |
456 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
457 |
|
|
* returning timeout status |
458 |
dl |
1.4 |
*/ |
459 |
jsr166 |
1.17 |
public void testInterruptedTimedPoll() throws InterruptedException { |
460 |
jsr166 |
1.42 |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
461 |
|
|
final CountDownLatch aboutToWait = new CountDownLatch(1); |
462 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
463 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
464 |
jsr166 |
1.70 |
long startTime = System.nanoTime(); |
465 |
jsr166 |
1.17 |
for (int i = 0; i < SIZE; ++i) { |
466 |
jsr166 |
1.70 |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
467 |
jsr166 |
1.17 |
} |
468 |
jsr166 |
1.42 |
aboutToWait.countDown(); |
469 |
jsr166 |
1.21 |
try { |
470 |
jsr166 |
1.70 |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
471 |
jsr166 |
1.22 |
shouldThrow(); |
472 |
jsr166 |
1.42 |
} catch (InterruptedException success) { |
473 |
jsr166 |
1.69 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
474 |
jsr166 |
1.42 |
} |
475 |
jsr166 |
1.21 |
}}); |
476 |
jsr166 |
1.17 |
|
477 |
jsr166 |
1.69 |
await(aboutToWait); |
478 |
jsr166 |
1.71 |
waitForThreadToEnterWaitState(t); |
479 |
jsr166 |
1.17 |
t.interrupt(); |
480 |
jsr166 |
1.70 |
awaitTermination(t); |
481 |
jsr166 |
1.42 |
checkEmpty(q); |
482 |
dl |
1.1 |
} |
483 |
|
|
|
484 |
dl |
1.4 |
/** |
485 |
dl |
1.5 |
* peek returns next element, or null if empty |
486 |
dl |
1.4 |
*/ |
487 |
|
|
public void testPeek() { |
488 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
489 |
|
|
for (int i = 0; i < SIZE; ++i) { |
490 |
jsr166 |
1.26 |
assertEquals(i, q.peek()); |
491 |
|
|
assertEquals(i, q.poll()); |
492 |
dl |
1.1 |
assertTrue(q.peek() == null || |
493 |
jsr166 |
1.26 |
!q.peek().equals(i)); |
494 |
dl |
1.1 |
} |
495 |
jsr166 |
1.15 |
assertNull(q.peek()); |
496 |
dl |
1.1 |
} |
497 |
|
|
|
498 |
dl |
1.4 |
/** |
499 |
dl |
1.5 |
* element returns next element, or throws NSEE if empty |
500 |
dl |
1.4 |
*/ |
501 |
|
|
public void testElement() { |
502 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
503 |
|
|
for (int i = 0; i < SIZE; ++i) { |
504 |
jsr166 |
1.26 |
assertEquals(i, q.element()); |
505 |
|
|
assertEquals(i, q.poll()); |
506 |
dl |
1.1 |
} |
507 |
|
|
try { |
508 |
|
|
q.element(); |
509 |
dl |
1.4 |
shouldThrow(); |
510 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
511 |
dl |
1.1 |
} |
512 |
|
|
|
513 |
dl |
1.4 |
/** |
514 |
dl |
1.5 |
* remove removes next element, or throws NSEE if empty |
515 |
dl |
1.4 |
*/ |
516 |
|
|
public void testRemove() { |
517 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
518 |
|
|
for (int i = 0; i < SIZE; ++i) { |
519 |
jsr166 |
1.26 |
assertEquals(i, q.remove()); |
520 |
dl |
1.1 |
} |
521 |
|
|
try { |
522 |
|
|
q.remove(); |
523 |
dl |
1.4 |
shouldThrow(); |
524 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
525 |
dl |
1.1 |
} |
526 |
|
|
|
527 |
dl |
1.4 |
/** |
528 |
dl |
1.5 |
* contains(x) reports true when elements added but not yet removed |
529 |
dl |
1.4 |
*/ |
530 |
|
|
public void testContains() { |
531 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
532 |
|
|
for (int i = 0; i < SIZE; ++i) { |
533 |
dl |
1.1 |
assertTrue(q.contains(new Integer(i))); |
534 |
jsr166 |
1.26 |
assertEquals(i, q.poll()); |
535 |
dl |
1.1 |
assertFalse(q.contains(new Integer(i))); |
536 |
|
|
} |
537 |
|
|
} |
538 |
|
|
|
539 |
dl |
1.4 |
/** |
540 |
dl |
1.5 |
* clear removes all elements |
541 |
dl |
1.4 |
*/ |
542 |
|
|
public void testClear() { |
543 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
544 |
dl |
1.1 |
q.clear(); |
545 |
|
|
assertTrue(q.isEmpty()); |
546 |
|
|
assertEquals(0, q.size()); |
547 |
dl |
1.3 |
assertEquals(SIZE, q.remainingCapacity()); |
548 |
|
|
q.add(one); |
549 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
550 |
dl |
1.11 |
assertTrue(q.contains(one)); |
551 |
dl |
1.1 |
q.clear(); |
552 |
|
|
assertTrue(q.isEmpty()); |
553 |
|
|
} |
554 |
|
|
|
555 |
dl |
1.4 |
/** |
556 |
dl |
1.5 |
* containsAll(c) is true when c contains a subset of elements |
557 |
dl |
1.4 |
*/ |
558 |
|
|
public void testContainsAll() { |
559 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
560 |
|
|
ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE); |
561 |
|
|
for (int i = 0; i < SIZE; ++i) { |
562 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
563 |
|
|
assertFalse(p.containsAll(q)); |
564 |
|
|
p.add(new Integer(i)); |
565 |
|
|
} |
566 |
|
|
assertTrue(p.containsAll(q)); |
567 |
|
|
} |
568 |
|
|
|
569 |
dl |
1.4 |
/** |
570 |
dl |
1.5 |
* retainAll(c) retains only those elements of c and reports true if changed |
571 |
dl |
1.4 |
*/ |
572 |
|
|
public void testRetainAll() { |
573 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
574 |
|
|
ArrayBlockingQueue p = populatedQueue(SIZE); |
575 |
|
|
for (int i = 0; i < SIZE; ++i) { |
576 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
577 |
|
|
if (i == 0) |
578 |
|
|
assertFalse(changed); |
579 |
|
|
else |
580 |
|
|
assertTrue(changed); |
581 |
|
|
|
582 |
|
|
assertTrue(q.containsAll(p)); |
583 |
jsr166 |
1.66 |
assertEquals(SIZE - i, q.size()); |
584 |
dl |
1.1 |
p.remove(); |
585 |
|
|
} |
586 |
|
|
} |
587 |
|
|
|
588 |
dl |
1.4 |
/** |
589 |
dl |
1.5 |
* removeAll(c) removes only those elements of c and reports true if changed |
590 |
dl |
1.4 |
*/ |
591 |
|
|
public void testRemoveAll() { |
592 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
593 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
594 |
|
|
ArrayBlockingQueue p = populatedQueue(i); |
595 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
596 |
jsr166 |
1.66 |
assertEquals(SIZE - i, q.size()); |
597 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
598 |
jsr166 |
1.60 |
Integer x = (Integer)(p.remove()); |
599 |
|
|
assertFalse(q.contains(x)); |
600 |
dl |
1.1 |
} |
601 |
|
|
} |
602 |
|
|
} |
603 |
|
|
|
604 |
jsr166 |
1.74 |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
605 |
jsr166 |
1.55 |
int size = q.size(); |
606 |
jsr166 |
1.74 |
Object[] a1 = q.toArray(); |
607 |
|
|
assertEquals(size, a1.length); |
608 |
|
|
Integer[] a2 = q.toArray(new Integer[0]); |
609 |
|
|
assertEquals(size, a2.length); |
610 |
|
|
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
611 |
|
|
assertEquals(size, a3.length); |
612 |
|
|
Integer[] a4 = new Integer[size]; |
613 |
|
|
assertSame(a4, q.toArray(a4)); |
614 |
|
|
Integer[] a5 = new Integer[size + 1]; |
615 |
|
|
Arrays.fill(a5, 42); |
616 |
|
|
assertSame(a5, q.toArray(a5)); |
617 |
|
|
Integer[] a6 = new Integer[size + 2]; |
618 |
|
|
Arrays.fill(a6, 42); |
619 |
|
|
assertSame(a6, q.toArray(a6)); |
620 |
|
|
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
621 |
|
|
for (Object[] a : as) { |
622 |
|
|
if (a.length > size) assertNull(a[size]); |
623 |
|
|
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
624 |
|
|
} |
625 |
jsr166 |
1.55 |
Iterator it = q.iterator(); |
626 |
jsr166 |
1.74 |
Integer s = q.peek(); |
627 |
jsr166 |
1.55 |
for (int i = 0; i < size; i++) { |
628 |
|
|
Integer x = (Integer) it.next(); |
629 |
jsr166 |
1.74 |
assertEquals(s + i, (int) x); |
630 |
|
|
for (Object[] a : as) |
631 |
|
|
assertSame(a1[i], x); |
632 |
jsr166 |
1.55 |
} |
633 |
|
|
} |
634 |
|
|
|
635 |
dl |
1.4 |
/** |
636 |
jsr166 |
1.74 |
* toArray() and toArray(a) contain all elements in FIFO order |
637 |
dl |
1.4 |
*/ |
638 |
jsr166 |
1.40 |
public void testToArray() { |
639 |
jsr166 |
1.74 |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
640 |
|
|
final int size = rnd.nextInt(6); |
641 |
|
|
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
642 |
|
|
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
643 |
|
|
for (int i = 0; i < size; i++) { |
644 |
jsr166 |
1.55 |
checkToArray(q); |
645 |
|
|
q.add(i); |
646 |
|
|
} |
647 |
|
|
// Provoke wraparound |
648 |
jsr166 |
1.74 |
int added = size * 2; |
649 |
|
|
for (int i = 0; i < added; i++) { |
650 |
jsr166 |
1.55 |
checkToArray(q); |
651 |
jsr166 |
1.74 |
assertEquals((Integer) i, q.poll()); |
652 |
|
|
q.add(size + i); |
653 |
jsr166 |
1.55 |
} |
654 |
jsr166 |
1.74 |
for (int i = 0; i < size; i++) { |
655 |
jsr166 |
1.55 |
checkToArray(q); |
656 |
jsr166 |
1.74 |
assertEquals((Integer) (added + i), q.poll()); |
657 |
jsr166 |
1.55 |
} |
658 |
dl |
1.1 |
} |
659 |
dl |
1.6 |
|
660 |
|
|
/** |
661 |
jsr166 |
1.38 |
* toArray(incompatible array type) throws ArrayStoreException |
662 |
dl |
1.6 |
*/ |
663 |
jsr166 |
1.74 |
public void testToArray_incompatibleArrayType() { |
664 |
jsr166 |
1.26 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
665 |
jsr166 |
1.15 |
try { |
666 |
jsr166 |
1.38 |
q.toArray(new String[10]); |
667 |
jsr166 |
1.15 |
shouldThrow(); |
668 |
jsr166 |
1.18 |
} catch (ArrayStoreException success) {} |
669 |
jsr166 |
1.74 |
try { |
670 |
|
|
q.toArray(new String[0]); |
671 |
|
|
shouldThrow(); |
672 |
|
|
} catch (ArrayStoreException success) {} |
673 |
dl |
1.6 |
} |
674 |
|
|
|
675 |
dl |
1.4 |
/** |
676 |
dl |
1.5 |
* iterator iterates through all elements |
677 |
dl |
1.4 |
*/ |
678 |
jsr166 |
1.17 |
public void testIterator() throws InterruptedException { |
679 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
680 |
jsr166 |
1.15 |
Iterator it = q.iterator(); |
681 |
jsr166 |
1.61 |
int i; |
682 |
|
|
for (i = 0; it.hasNext(); i++) |
683 |
|
|
assertTrue(q.contains(it.next())); |
684 |
|
|
assertEquals(i, SIZE); |
685 |
|
|
assertIteratorExhausted(it); |
686 |
|
|
|
687 |
|
|
it = q.iterator(); |
688 |
|
|
for (i = 0; it.hasNext(); i++) |
689 |
jsr166 |
1.17 |
assertEquals(it.next(), q.take()); |
690 |
jsr166 |
1.61 |
assertEquals(i, SIZE); |
691 |
|
|
assertIteratorExhausted(it); |
692 |
|
|
} |
693 |
|
|
|
694 |
|
|
/** |
695 |
|
|
* iterator of empty collection has no elements |
696 |
|
|
*/ |
697 |
|
|
public void testEmptyIterator() { |
698 |
|
|
assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
699 |
dl |
1.1 |
} |
700 |
|
|
|
701 |
dl |
1.4 |
/** |
702 |
dl |
1.5 |
* iterator.remove removes current element |
703 |
|
|
*/ |
704 |
jsr166 |
1.29 |
public void testIteratorRemove() { |
705 |
dl |
1.5 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
706 |
|
|
q.add(two); |
707 |
|
|
q.add(one); |
708 |
|
|
q.add(three); |
709 |
|
|
|
710 |
|
|
Iterator it = q.iterator(); |
711 |
|
|
it.next(); |
712 |
|
|
it.remove(); |
713 |
jsr166 |
1.12 |
|
714 |
dl |
1.5 |
it = q.iterator(); |
715 |
jsr166 |
1.28 |
assertSame(it.next(), one); |
716 |
|
|
assertSame(it.next(), three); |
717 |
dl |
1.5 |
assertFalse(it.hasNext()); |
718 |
|
|
} |
719 |
|
|
|
720 |
|
|
/** |
721 |
|
|
* iterator ordering is FIFO |
722 |
dl |
1.4 |
*/ |
723 |
dl |
1.1 |
public void testIteratorOrdering() { |
724 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
725 |
dl |
1.3 |
q.add(one); |
726 |
|
|
q.add(two); |
727 |
|
|
q.add(three); |
728 |
dl |
1.1 |
|
729 |
|
|
assertEquals("queue should be full", 0, q.remainingCapacity()); |
730 |
|
|
|
731 |
|
|
int k = 0; |
732 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
733 |
jsr166 |
1.26 |
assertEquals(++k, it.next()); |
734 |
dl |
1.1 |
} |
735 |
dl |
1.4 |
assertEquals(3, k); |
736 |
dl |
1.1 |
} |
737 |
|
|
|
738 |
dl |
1.4 |
/** |
739 |
dl |
1.5 |
* Modifications do not cause iterators to fail |
740 |
dl |
1.4 |
*/ |
741 |
jsr166 |
1.29 |
public void testWeaklyConsistentIteration() { |
742 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
743 |
dl |
1.3 |
q.add(one); |
744 |
|
|
q.add(two); |
745 |
|
|
q.add(three); |
746 |
jsr166 |
1.17 |
for (Iterator it = q.iterator(); it.hasNext();) { |
747 |
|
|
q.remove(); |
748 |
|
|
it.next(); |
749 |
dl |
1.1 |
} |
750 |
dl |
1.4 |
assertEquals(0, q.size()); |
751 |
dl |
1.1 |
} |
752 |
|
|
|
753 |
dl |
1.4 |
/** |
754 |
dl |
1.5 |
* toString contains toStrings of elements |
755 |
dl |
1.4 |
*/ |
756 |
|
|
public void testToString() { |
757 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
758 |
dl |
1.1 |
String s = q.toString(); |
759 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
760 |
jsr166 |
1.47 |
assertTrue(s.contains(String.valueOf(i))); |
761 |
dl |
1.1 |
} |
762 |
jsr166 |
1.12 |
} |
763 |
dl |
1.1 |
|
764 |
dl |
1.4 |
/** |
765 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
766 |
dl |
1.4 |
*/ |
767 |
dl |
1.1 |
public void testOfferInExecutor() { |
768 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
769 |
dl |
1.3 |
q.add(one); |
770 |
|
|
q.add(two); |
771 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
772 |
jsr166 |
1.68 |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
773 |
|
|
try (PoolCleaner cleaner = cleaner(executor)) { |
774 |
|
|
executor.execute(new CheckedRunnable() { |
775 |
|
|
public void realRun() throws InterruptedException { |
776 |
|
|
assertFalse(q.offer(three)); |
777 |
|
|
threadsStarted.await(); |
778 |
|
|
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
779 |
|
|
assertEquals(0, q.remainingCapacity()); |
780 |
|
|
}}); |
781 |
|
|
|
782 |
|
|
executor.execute(new CheckedRunnable() { |
783 |
|
|
public void realRun() throws InterruptedException { |
784 |
|
|
threadsStarted.await(); |
785 |
|
|
assertEquals(0, q.remainingCapacity()); |
786 |
|
|
assertSame(one, q.take()); |
787 |
|
|
}}); |
788 |
|
|
} |
789 |
dl |
1.1 |
} |
790 |
|
|
|
791 |
dl |
1.4 |
/** |
792 |
jsr166 |
1.47 |
* timed poll retrieves elements across Executor threads |
793 |
dl |
1.4 |
*/ |
794 |
dl |
1.1 |
public void testPollInExecutor() { |
795 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
796 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
797 |
jsr166 |
1.68 |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
798 |
|
|
try (PoolCleaner cleaner = cleaner(executor)) { |
799 |
|
|
executor.execute(new CheckedRunnable() { |
800 |
|
|
public void realRun() throws InterruptedException { |
801 |
|
|
assertNull(q.poll()); |
802 |
|
|
threadsStarted.await(); |
803 |
|
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
804 |
|
|
checkEmpty(q); |
805 |
|
|
}}); |
806 |
|
|
|
807 |
|
|
executor.execute(new CheckedRunnable() { |
808 |
|
|
public void realRun() throws InterruptedException { |
809 |
|
|
threadsStarted.await(); |
810 |
|
|
q.put(one); |
811 |
|
|
}}); |
812 |
|
|
} |
813 |
dl |
1.1 |
} |
814 |
dl |
1.2 |
|
815 |
dl |
1.4 |
/** |
816 |
dl |
1.5 |
* A deserialized serialized queue has same elements in same order |
817 |
dl |
1.4 |
*/ |
818 |
jsr166 |
1.17 |
public void testSerialization() throws Exception { |
819 |
jsr166 |
1.49 |
Queue x = populatedQueue(SIZE); |
820 |
|
|
Queue y = serialClone(x); |
821 |
dl |
1.2 |
|
822 |
jsr166 |
1.56 |
assertNotSame(x, y); |
823 |
jsr166 |
1.49 |
assertEquals(x.size(), y.size()); |
824 |
|
|
assertEquals(x.toString(), y.toString()); |
825 |
|
|
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
826 |
|
|
while (!x.isEmpty()) { |
827 |
|
|
assertFalse(y.isEmpty()); |
828 |
|
|
assertEquals(x.remove(), y.remove()); |
829 |
|
|
} |
830 |
|
|
assertTrue(y.isEmpty()); |
831 |
dl |
1.6 |
} |
832 |
|
|
|
833 |
|
|
/** |
834 |
|
|
* drainTo(c) empties queue into another collection c |
835 |
jsr166 |
1.12 |
*/ |
836 |
dl |
1.6 |
public void testDrainTo() { |
837 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
838 |
|
|
ArrayList l = new ArrayList(); |
839 |
|
|
q.drainTo(l); |
840 |
jsr166 |
1.51 |
assertEquals(0, q.size()); |
841 |
|
|
assertEquals(SIZE, l.size()); |
842 |
jsr166 |
1.12 |
for (int i = 0; i < SIZE; ++i) |
843 |
dl |
1.6 |
assertEquals(l.get(i), new Integer(i)); |
844 |
dl |
1.11 |
q.add(zero); |
845 |
|
|
q.add(one); |
846 |
|
|
assertFalse(q.isEmpty()); |
847 |
|
|
assertTrue(q.contains(zero)); |
848 |
|
|
assertTrue(q.contains(one)); |
849 |
|
|
l.clear(); |
850 |
|
|
q.drainTo(l); |
851 |
jsr166 |
1.51 |
assertEquals(0, q.size()); |
852 |
|
|
assertEquals(2, l.size()); |
853 |
jsr166 |
1.12 |
for (int i = 0; i < 2; ++i) |
854 |
dl |
1.11 |
assertEquals(l.get(i), new Integer(i)); |
855 |
dl |
1.6 |
} |
856 |
|
|
|
857 |
|
|
/** |
858 |
|
|
* drainTo empties full queue, unblocking a waiting put. |
859 |
jsr166 |
1.12 |
*/ |
860 |
jsr166 |
1.17 |
public void testDrainToWithActivePut() throws InterruptedException { |
861 |
dl |
1.6 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
862 |
jsr166 |
1.17 |
Thread t = new Thread(new CheckedRunnable() { |
863 |
|
|
public void realRun() throws InterruptedException { |
864 |
jsr166 |
1.66 |
q.put(new Integer(SIZE + 1)); |
865 |
jsr166 |
1.17 |
}}); |
866 |
|
|
|
867 |
|
|
t.start(); |
868 |
|
|
ArrayList l = new ArrayList(); |
869 |
|
|
q.drainTo(l); |
870 |
|
|
assertTrue(l.size() >= SIZE); |
871 |
|
|
for (int i = 0; i < SIZE; ++i) |
872 |
|
|
assertEquals(l.get(i), new Integer(i)); |
873 |
|
|
t.join(); |
874 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
875 |
dl |
1.6 |
} |
876 |
|
|
|
877 |
|
|
/** |
878 |
jsr166 |
1.34 |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
879 |
jsr166 |
1.12 |
*/ |
880 |
dl |
1.6 |
public void testDrainToN() { |
881 |
jsr166 |
1.66 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2); |
882 |
dl |
1.6 |
for (int i = 0; i < SIZE + 2; ++i) { |
883 |
jsr166 |
1.13 |
for (int j = 0; j < SIZE; j++) |
884 |
dl |
1.11 |
assertTrue(q.offer(new Integer(j))); |
885 |
dl |
1.6 |
ArrayList l = new ArrayList(); |
886 |
|
|
q.drainTo(l, i); |
887 |
jsr166 |
1.35 |
int k = (i < SIZE) ? i : SIZE; |
888 |
jsr166 |
1.52 |
assertEquals(k, l.size()); |
889 |
jsr166 |
1.66 |
assertEquals(SIZE - k, q.size()); |
890 |
jsr166 |
1.12 |
for (int j = 0; j < k; ++j) |
891 |
dl |
1.6 |
assertEquals(l.get(j), new Integer(j)); |
892 |
jsr166 |
1.59 |
do {} while (q.poll() != null); |
893 |
dl |
1.2 |
} |
894 |
|
|
} |
895 |
|
|
|
896 |
jsr166 |
1.57 |
/** |
897 |
|
|
* remove(null), contains(null) always return false |
898 |
|
|
*/ |
899 |
|
|
public void testNeverContainsNull() { |
900 |
|
|
Collection<?>[] qs = { |
901 |
|
|
new ArrayBlockingQueue<Object>(10), |
902 |
|
|
populatedQueue(2), |
903 |
|
|
}; |
904 |
|
|
|
905 |
|
|
for (Collection<?> q : qs) { |
906 |
|
|
assertFalse(q.contains(null)); |
907 |
|
|
assertFalse(q.remove(null)); |
908 |
|
|
} |
909 |
|
|
} |
910 |
dl |
1.1 |
} |